Abstract After more than two years of successful in-orbit operations, the γ-ray coded aperture SIGMA telescope has accumulated 800 hours of live-time observations of the Galactic Center region, including the remarkable hard source identified with the X-ray source 1E 1740.7–2942. The long-term behavior of the soft γ-ray emission of 1E 1740.7–2942, as determined from the SIGMA survey, supplemented with previously available soft γ-ray data, leads to its identification with a singular radio source, which consists of a double sided radio jet emanating from a compact variable core whose variability is correlated with that of the soft γ-ray source. The compact radio core, which lies well inside the improved soft γ-ray (40–150 keV) error circle (27″ radius) derived from the high-resolution SIGMA survey, is also inside the ROSAT and TTM error circle derived respectively in the soft and hard X-ray bands.


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    Title :

    1E 1740.7-2942 revisited: Confirmation of its identification with the core of a double sided radio jet structure


    Contributors:
    Cordier, B. (author) / Lebrun, F. (author) / Mirable, F. (author) / Paul, J. (author) / Mandrou, P. (author) / Bouchet, L. (author) / Rogues, J.P. (author) / Vedrenne, G. (author) / Sunyaev, R. (author) / Churazov, E. (author)

    Published in:

    Advances in Space Research ; 13 , 12 ; 611-616


    Publication date :

    1993-01-01


    Size :

    6 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    1E 1740.7-2942 Revisited: Confirmation of its Identification with the Core of a Double Sided Radio Jet Structure

    Cordier, B. / Lebrun, F. / Mirable, F. et al. | British Library Conference Proceedings | 1993


    Nr. 2942

    DataCite | 1901


    The Great Annihilator 1E1740.7-2942: Molecular Cloud Connection and Coronal Structure

    Vilhu, O. / Hannikainen, D. / Muhli, P. et al. | British Library Online Contents | 1997


    Observations of Hard Galactic Center Source 1E1740.7-2942 with ART-P/Granat

    Grebenev, S. A. / Pavlinsky, M. N. / Sunyaev, R. A. et al. | British Library Conference Proceedings | 1995